High Voltage (HV) Cable Joints & Cable Terminations – Overview Thorne & Derrick UK stock and distribute HV high voltage cable joint and cable termination kits for 3.3kV, 6.6kV, 11kV, 15kV, 33kV and Triplex cable systems. This includes heat shrink joints and termination kits for single and multi-core high voltage power cables with XLPE, EPR or PILC insulation, copper wire screen or copper tape screens and unarmoured or armoured (AWA SWA) construction. Cable joints and terminations are supplied with either crimp or shearbolt cable lugs.